The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 16, 1978
Filed:
Jun. 23, 1976
Applicant:
Inventors:
Klaus Kroner, Hamburg, DT;
Wilhelmus Antonius Zwijsen, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03J / ;
U.S. Cl.
CPC ...
323 19 ; 323-1 ; 330257 ; 334 15 ;
Abstract
A switch for a varicap tuner has a differential amplifier. A feedback circuit comprising a current mirror and a feedback amplifier ensures equal current flow in the difference amplifier transistors, and thereby ensures temperature compensation.